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/* $OpenBSD: beeper.c,v 1.8 2003/06/02 20:02:49 jason Exp $ */
/*
* Copyright (c) 2001 Jason L. Wright (jason@thought.net)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
/*
* Driver for beeper device on SUNW,Ultra-1-Engine.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/timeout.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>
#include "pckbd.h"
#if NPCKBD > 0
#include <dev/ic/pckbcvar.h>
#include <dev/pckbc/pckbdvar.h>
#endif
struct beeper_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct timeout sc_to;
int sc_belltimeout, sc_bellactive;
};
#define BEEP_REG 0
int beeper_match(struct device *, void *, void *);
void beeper_attach(struct device *, struct device *, void *);
struct cfattach beeper_ca = {
sizeof(struct beeper_softc), beeper_match, beeper_attach
};
struct cfdriver beeper_cd = {
NULL, "beeper", DV_DULL
};
#if NPCKBD > 0
void beeper_stop(void *);
void beeper_bell(void *, u_int, u_int, u_int, int);
#endif
int
beeper_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct ebus_attach_args *ea = aux;
if (strcmp(ea->ea_name, "beeper") == 0)
return (1);
return (0);
}
void
beeper_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct beeper_softc *sc = (void *)self;
struct ebus_attach_args *ea = aux;
sc->sc_iot = ea->ea_iotag;
/* Use prom address if available, otherwise map it. */
if (ea->ea_nvaddrs) {
if (bus_space_map(sc->sc_iot, ea->ea_vaddrs[0], 0,
BUS_SPACE_MAP_PROMADDRESS, &sc->sc_ioh)) {
printf(": can't map PROM register space\n");
return;
}
} else if (ebus_bus_map(sc->sc_iot, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
BUS_SPACE_MAP_LINEAR, 0, &sc->sc_ioh) != 0) {
printf(": can't map register space\n");
return;
}
#if NPCKBD > 0
timeout_set(&sc->sc_to, beeper_stop, sc);
pckbd_hookup_bell(beeper_bell, sc);
#endif
printf("\n");
}
#if NPCKBD > 0
void
beeper_stop(vsc)
void *vsc;
{
struct beeper_softc *sc = vsc;
int s;
s = spltty();
bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 0);
sc->sc_bellactive = 0;
sc->sc_belltimeout = 0;
splx(s);
}
void
beeper_bell(vsc, pitch, period, volume, poll)
void *vsc;
u_int pitch, period, volume;
int poll;
{
struct beeper_softc *sc = vsc;
int s, ticks;
ticks = (period * hz) / 1000;
if (ticks <= 0)
ticks = 1;
s = spltty();
if (sc->sc_bellactive) {
if (sc->sc_belltimeout == 0)
timeout_del(&sc->sc_to);
}
if (pitch == 0 || period == 0) {
beeper_stop(sc);
splx(s);
return;
}
if (!sc->sc_bellactive) {
sc->sc_bellactive = 1;
sc->sc_belltimeout = 1;
bus_space_write_4(sc->sc_iot, sc->sc_ioh, BEEP_REG, 1);
timeout_add(&sc->sc_to, ticks);
}
splx(s);
}
#endif /* NPCKBD > 0 */
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